This allows adding patterns to the qml mime type in the options dialog.
Previously they were always parsed as js.
Change-Id: Ifa344fb6ab8cbcda02becef991cf6807615a1caa
Reviewed-on: http://codereview.qt-project.org/4515
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>